TC74HC540AF(F),
TC74HC540AP(F),
TC74HC541AF,缓冲器和线路驱动器 Octal BUS Buffer Tri-State
TC74HC541AF(EL,F),IC BUFFER NON-INVERT 6V 20SOP
TC74HC541AP,IC BUFF/DVR TRI-ST 8BIT 20DIP
TC74HC541AP(F),IC BUFF/DVR TRI-ST 8BIT 20DIP
TC74HC541APF,缓冲器和线路驱动器 Tri-State
TC74HC564AF(F),
